70 entries under shaky topic. ×

12
borderline(adjective, clear, open, delicate, certain)
12
indistinct(adjective, obscure, rough, uncertain, dim)
11
chancy(noun, adjective, clear, delicate, certain)
11
indeterminate(adjective, clear, obscure, rough, certain)
10
insecure(adjective, delicate, uncertain, awkward, nervous)
10
precarious(adjective, uncertain, unstable, vague)
9
unsteady(adjective, weak, delicate, uncertain, unstable)
8
hazy(adjective, uncertain, vague, unclear)
8
open(adjective, uncertain, nervous, unstable, unsettled)
7
unstable(adjective, weak, delicate, uncertain, nervous)
7
tricky(noun, adjective, weak, delicate, uncertain)
7
uneasy(adjective, open, uncertain, anxious, awkward)
6
dicey(noun, adjective, open, obscure, delicate)
6
doubtable(adjective, open, obscure, uncertain)
6
touch-and-go(adjective, unclear, unlikely, questionable)
6
unconfident(adjective, uncertain, nervous, dubious)
5
contingent(adjective, delicate, uncertain, unstable)
5
hazardous(adjective, open, obscure, delicate, uncertain)
5
risky(noun, adjective, weak, delicate, uncertain)
5
slippery(adjective, weak, delicate, uncertain, unstable)
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APASmart Define. (2016). doubtful thesaurus. Retrieved September 25, 2026, from https://smartdefine.org/doubtful/thesaurus/synonyms
ChicagoSmart Define. 2016. "doubtful thesaurus" https://smartdefine.org/doubtful/thesaurus/synonyms (accessed September 25, 2026).
HarvardSmart Define 2016, doubtful thesaurus, Smart Define, viewed 25 September, 2026, <https://smartdefine.org/doubtful/thesaurus/synonyms>.
MLASmart Define. "doubtful thesaurus" 24 March 2016. Web. 25 September 2026. <https://smartdefine.org/doubtful/thesaurus/synonyms>